Singapore to San Francisco (SIN–SFO) — Airlines, Schedules & Connections
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No nonstop flights on this route. connecting options below.
SIN–SFO is served by 2 airlines with nonstop service. Singapore Airlines and United Airlines lead the route. The flight covers 8,440 miles in approximately 14h 55m. Beyond nonstop, 43 hubs offer 1-stop connections.
Airline Landscape
| Airline | Freq/wk | Aircraft | Duration | Dep OTP | Alliance | Codeshares |
|---|---|---|---|---|---|---|
| SQ Singapore Airlines | 14 | 359 | 14h55-15h | – | – | – |
| UA United Airlines | 14 | 789 | 15h10 | – | Star Alliance | – |
Weekly Schedule Pattern
Connection Landscape
Travel Essentials
SIN: +08 · SFO: PDT
When it's 6:00 PM in Singapore, it's 3:00 AM in San Francisco.
Singapore is part of the US Visa Waiver Program. Singaporean passport holders can enter the United States for up to 90 days without a visa, but must obtain an approved ESTA (Electronic System for Travel Authorization) before boarding. Apply at the official CBP site. ESTA costs USD 21, is valid for 2 years, and covers multiple entries. Passport must be valid for at least 6 months beyond the planned stay. The 90-day limit cannot be extended, and overstaying voids future ESTA eligibility.
MRT East West Line (Changi Airport branch) connects the airport to the city in 30–45 minutes from City Hall or Raffles Place (S$2.20–2.50 with EZ-Link). Trains run from 5:31am to 11:18pm (T1/T2/T3). Terminal 4 is served by a dedicated shuttle bus from T2.Taxis from Orchard Road cost S$20–35 and take 20–30 minutes. Grab is widely used and slightly cheaper. Airport surcharges apply for taxis departing from the city to the airport (S$3–5 depending on peak hours). The trip is short; Singapore's island geography keeps distances manageable.
BART from SFO station (free AirTrain from any terminal to the station) to downtown San Francisco takes 30–40 minutes ($10.45 to Embarcadero). Traffic on 101 can make taxis and ride-hails much slower during peak hours; BART skips all of that. BART also reaches Oakland, Berkeley, and Millbrae for Caltrain connections.Ride-hails from SFO use a dedicated garage pickup area; follow signs. Taxis are metered; downtown SF costs $40–60. Caltrain to the Peninsula (Mountain View, Palo Alto, San Jose) requires taking BART to Millbrae station for the transfer. Rental cars are at a consolidated facility accessible by AirTrain.
Coastal fog dominates the climate pattern. The thick marine layer ("Karl the Fog") rolls into SFO from the Pacific regularly in summer (June–September), causing significant low-visibility delays even on days that appear sunny inland. Morning fog burns off by afternoon most days, but persistent IFR conditions can last all day. This is the primary flight disruption risk at SFO.
Temperatures are mild year-round (10–20°C) with little seasonal variation. Winters bring rain (December–March) and occasional atmospheric river events that cause brief but intense flooding on the 101. Summers are cool. Pack a light jacket year-round. Wind off the bay affects small aircraft approach paths.
SIN–SFO Quick Facts
Frequently Asked Questions
Flights from SIN to SFO
Singapore Changi Airport (SIN) and San Francisco International Airport (SFO) are connected by nonstop service from Singapore Airlines and United Airlines. With 28 weekly departures, this is a heavily served route.
SIN to SFO Flight Duration and Schedule
Nonstop flight time from SIN to SFO ranges from 14 hours 55 minutes to 15 hours 10 minutes. The route covers a distance of 8,440 miles (13,581 km). There are approximately 28 weekly flights outbound and 28 return, totaling 56 flights per week in both directions.
Connecting Options and Alternatives
43 one-stop connections are available, with the fastest taking approximately 16 hours via CRK. Two-stop connections are also available via intermediate hubs.